1988 318 not cranking over
I know this is not a hot rod ,but I have always gotten good answers here.My father in law van has a 1988 dodge van with a 318 in it .He thought he had a bad battery or starter. I replaced both and the motor still wont crank over .The starter is kicking in and the battery has a full charge. We got the starter to work on the bench and I rechaged the battery so I believe they are both ok.
I turned the motor over by hand ,and by the way was VERY hard to do . After I did the motor cranked over slow at first ,then started. It smoke like hell for about 5 minutes. We ran it for about half hour ,shut it off and it restarted.
Then the next morning it was doing the same thing it was.
My question is ,,is the some internal parts of the motor that would "lock" up the motor? If I turn it over by hand it will crank slowly then start .
Any help would be great